Yes, you're probably right about the beer prices. I think DD, Tartan and Tankard in the Mess were all 1/9 when I started a year or 2 earlier. Outside it was in the low 2s, I suppose, the RAF/NAAFI discount not being particularly generous - unlike 'afloat' on the Navy bases. I remember Embassy were 4/7 for 20 (no discount), and that's when I gave them up.